Present in Michigan County: Lower Peninsula counties; Geological Formation: Produced hydrocarbon gases from various formations; Specific Mine Name: None; Commercial Mining History: None; Published Literature: Ma, L., Castro, M.C., Hall, C.M., Walter, L.M., 2005. Cross-formational ?ow and salinity sources inferred from a combined study of helium concentrations, isotopic ratios, and major elements in the Marshall aquifer, southern Michigan. Geochem. Geophys. Geosyst. 6 (Q10004). doi:10.1029/2005GC001010.; Unpublished Literature: Michigan Geological Survey in house data spreadsheet with gas analysis from oil and gas wells, with Helium concentration analyses from 267 oil and gas wells; Comments: ; USGS Critical Mineral Reference:
